How to pass optional parameters in url, via path () function?

I'm confused about passing optional parameter via url in Django with path() instead of url(). I found that I should use kwargs, so I added it to path:

path('all/<str:category>/<int:page_num>/', views.show_all_objects, name="show-all-objects"),

path('all/<str:category>/<int:page_num>/', views.show_all_objects, kwargs={'city': None}, name="show-all-objects"),

Ok but now how to pass additional parameter from template, I tried with:

<a href="{% url 'show-all-objects' category='restaurants' page_num=1 city=1 %}"

which returns me common error for NoReverseMatch at /

So I added it to url:

path('all/<str:category>/<int:page_num>/<int:city>/', views.show_all_objects, kwargs={'city': None}, name="show-all-objects"),

But error is the same, I'm pretty sure, that this is not the proper way to do it, but I cannot find info about passing optional parameter via path(), all info is with url() Is it possible ?

#urls.py urlpatterns = [ path('foo/<param_1>/<param_2>/', sample_view, name='view-with-optional-params'), path('foo/<param_1>/', sample_view, name='view-with-optional-params'), path('foo/', sample_view, name='view-with-optional-params'), ] #views.py from django.http.response import HttpResponse def sample_view(request, param_1=None, param_2=None): return HttpResponse("got response, param_1 is {} and param_2 is {}".format(param_1, param_2)) # template.html <body> <a href= {% url 'view-with-optional-params' param_1='foo' param_2=123 %}>two parameters</a><br> <a href= {% url 'view-with-optional-params' param_1='foo' %}>one parameter</a><br> <a href= {% url 'view-with-optional-params' %}>without parameter</a><br> </body>

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